Well I can see FSDT will refuse to even look into these cdt issues.
It's because we ALREADY looked into these issue, that you have beein given those explanation. If you search for messages about JFK and CTD, and follow all threads to the end, you'll find that EVERY user eventually found the culprit was either an AI texture, a corrupted BGL, a corrupted scenery.cfg, an antivirus program or something else and they SOLVED the issue. An user even found out that a BUILDING crash (which surely" looks like a scenery problem) was caused by an AIRPLANE!
Funny I can fly into all 3rd party sceneries out with the LVLD 767 but now all of a sudden its my computer and cannot possibly be the scenery.
Have you experienced any crash at JFK with a clean FS9 installation with a default airplane ? Have you even tried ?
I haven't said it CANNOT possibly be the scenery, it's just that it's very unlikely, and it's more likely that JFK is simply taking that little bit more amount of memory that, on your system, simply made you crossing that borderline between being able to fly and crashing.